摘要
针对我国西部地区地震勘探叠前记录中同时存在强面波和强线性干扰等相干干扰的现象,从利用常规处理的F-K滤波方法压制这种综合强相干干扰出发,分析了该方法的不足,并提出了利用离散二维小波变换同时压制强面波和强线性干扰共存的强相干干扰的方法,同时提出了改进措施。从实际资料试算效果来看,改进后的离散二维小波变换方法效果明显优于传统方法,而且实现简单,自动化程度也有很大提高。
In consideration of the phenomena of coherent interference of strong surface waves and strong linear interference existed in the pre-stack process of seismic exploitation in west China,starting from compressing the integrated strong coherent interference with conventional F-K filtration method,the shortcomings of the method are analyzed.The method of 2 dimensinoal discrete wavelet transform is used to compress the co-existed strong coherent interference of strong surface wave and strong linear interference,and at the same time the measures for improvement are proposed.The effect of data calculation shows that the result of improved 2 dimensional discrete wavelet transform is better than that of traditional method,application is easy and automation level is improved.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2007年第2期54-57,148,共4页
Journal of Oil and Gas Technology
关键词
二维离散小波变换
强相干干扰
面波
线性干扰
F-K滤波
2 dimensional discrete wavelet transform
coherent interference
surface wave
linear interference
F-K filtration
